<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row>
        <!-- 搜索与添加区域 -->
        <el-col :span="8">
          <!-- 双向绑定 v-model 绑定数据，实现搜索功能 -->
          <el-input placeholder="请输入内容" class="input-with-select"
                    v-model="queryInfo.query"
                    @clear="getUserList"
                    clearable>
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <el-table :data="userList" border stripe width="100%">
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 老式作用域插槽写法：<template slot-scope="scope">-->
          <!-- 最新的作用 域插槽的写法 -->
          <template v-slot="scope">
            <!-- 获取表格内部当前行的数据 -->
            <!--{{ scope.row }}-->
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template v-slot="scope">
            <!-- 修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色 -->
            <!-- enterable：设置鼠标是否可进入到 tooltip 中-->
            <el-tooltip effect="dark" content="分配角色" placement="top" enterable>
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5,10,15]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      @close="addDialogClosed"
      width="50%">
      <!-- 内容主体区域 -->
      <el-form :label-position="labelPosition"
               :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addDialogUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editDialogUser">确 定</el-button>
  </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      @close="setRoleDialogClosed"
      width="30%">
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <el-select v-model="selectRoleId" placeholder="请选择">
          <el-option
            v-for="item in rolesList"
            :label="item.roleName"
            :value="item.id"
            :key="item.id">
          </el-option>
        </el-select>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "User",
  data() {
    // 验证邮箱规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^[a-zA-Z0-9_-]+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)+$/;
      if (!regEmail.test(value)) {
        return callback(new Error('请输入正确的邮箱'));
      }
      callback();
    };
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^1(3\d|4[5-8]|5[0-35-9]|6[567]|7[01345-8]|8\d|9[025-9])\d{8}$/;
      if (!regMobile.test(value)) {
        return callback(new Error('请输入正确的手机号码'));
      }
      callback();
    };
    return {
      // 控制form表单前文字显示位置
      labelPosition: 'left',
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 5,
      },
      // 用户名列表数据
      userList: [],
      // 总计数据
      total: 0,

      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制编辑用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {
        username: '',
        email: '',
        mobile: ''
      },
      // 修改表单的验证规则
      editFormRules: {
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的信息列表
      rolesList: [],
      // 已选中的角色ID
      selectRoleId: '',
      // 设置删除按钮
      deleteDialogVisible: false
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      // 解构赋值
      const {data: res} = await this.$http.get('users', {
        params: this.queryInfo
      });
      // console.log(res);
      // 判断返回码的值，不符合要求，返回api接口中数据错误提醒
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.userList = res.data.users;
      this.total = res.data.total;
      // console.log(this.userList);
    },
    // 监听 handleSizeChange 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听 handleCurrentChange 改变事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听 switch 状态的改变
    async userStateChange(userinfo) {
      // console.log(userinfo);
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`);
      if (res.meta.status != 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新状态失败');
      }
      this.$message.success('更新状态成功');
    },
    // 点击 确定 按钮，添加新用户
    addDialogUser() {
      // 通过form表单自带的validate属性实现用户增加
      this.$refs.addFormRef.validate(async item => {
        if (!item) return;
        // 可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm);
        if (res.data.status != 201) {
          this.$message.error('添加用户失败');
        }
        this.$message.success('添加用户成功');
        // 隐藏添加用户的对话框
        this.addDialogVisible = false;
        // 重新刷新获取用户列表
        this.getUserList();
      })
    },
    // 监听添加用户对话框的关闭事件，清空表单数据
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
      // 解构赋值
      const {data: res} = await this.$http.get('users/' + id);
      // console.log(res);
      if (res.meta.status != 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 点击 确定 按钮，修改数据，写入数据库
    editDialogUser() {
      console.log(this.editForm.id);
      // 通过form表单自带的validate属性实现用户增加
      this.$refs.editFormRef.validate(async item => {
        if (!item) return;
        // 可以发起添加用户的网络请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, this.editForm);
        if (res.data.status != 201) {
          this.$message.error('更新用户信息失败');
        }
        // 隐藏添加用户的对话框
        this.editDialogVisible = false;
        // 重新刷新获取用户列表
        this.getUserList();
        this.$message.success('更新用户成功');
      })
    },
    // 监听添加用户对话框的关闭事件，清空表单数据
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消删除，则返回值为字符串 cancel
      // console.log(confirmResult);
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除');
      }

      const {data: res} = await this.$http.delete('users/' + id);
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败');
      }
      this.$message.success('删除用户成功')
      this.getUserList();
    },
    // 点击显示删除当前用户的基本信息
    async setRole(userInfo) {
      this.userInfo = userInfo;
      // 展示对话框之前，获取所有角色的列表
      const {data: res} = await this.$http.get('roles');
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败');
      this.rolesList = res.data;
      this.setRoleDialogVisible = true;
    },
    // 点击按钮分配角色
    async saveRoleInfo() {
      console.log(this.selectRoleId);
      if (!this.selectRoleId) return this.$message.error('请选择要分配的角色！');
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectRoleId});
      if (res.meta.status !== 200) return this.$message.error('更新失败');
      this.$message.success('更新成功');
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectRoleId = '';
      this.userInfo = {};
    }
  }
}
</script>

<style scoped>

</style>
